/*
 * @(#)NIOServer.java	1.0 Mar 8, 2008
 *
 *	The MIT License
 *
 *	Copyright (c) 2008 Malachi de AElfweald <malachid@gmail.com>
 *
 *	Permission is hereby granted, free of charge, to any person obtaining a copy
 *	of this software and associated documentation files (the "Software"), to deal
 *	in the Software without restriction, including without limitation the rights
 *	to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 *	copies of the Software, and to permit persons to whom the Software is
 *	furnished to do so, subject to the following conditions:
 *
 *	The above copyright notice and this permission notice shall be included in
 *	all copies or substantial portions of the Software.
 *
 *	THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 *	IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 *	FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 *	AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 *	LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 *	OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 *	THE SOFTWARE.
 */
package org.eoti.net.nio;

import org.eoti.net.PortConfiguration;
import static org.eoti.util.TimeUtil.Millisecond;
import static org.eoti.util.TimeUtil.Minute;

import java.nio.channels.Selector;
import java.nio.channels.SocketChannel;
import java.util.concurrent.LinkedBlockingQueue;

public class NIOServer<ATTACHMENT>
{
	protected LinkedBlockingQueue<SocketChannel> 	connections;
    protected NIOService<ATTACHMENT>				service;
    protected PortConfiguration						portConfiguration;
	protected Selector 								acceptSelector;
	protected Selector								readSelector;
	protected NIOAcceptor<ATTACHMENT>				acceptor;
	protected NIOResponder<ATTACHMENT>				responder;
	protected boolean								dead = true;
	protected long 									timeoutMS = 0;


	public NIOServer(NIOService<ATTACHMENT> service)
	{
        this.service = service;
		timeoutMS = Millisecond.convertFrom(5, Minute);
	}

	public long getTimeoutMS(){return timeoutMS;}
	public NIOService<ATTACHMENT> getService(){return service;}
	public LinkedBlockingQueue<SocketChannel> getConnections(){return connections;}
    public Selector getReadSelector(){return readSelector;}
	public Selector getAcceptSelector(){return acceptSelector;}
    public NIOAcceptor<ATTACHMENT> getAcceptor(){return acceptor;}
	public NIOResponder<ATTACHMENT> getResponder(){return responder;}
    public PortConfiguration getPortConfiguration(){return portConfiguration;}

	public void startServer(PortConfiguration portConfiguration)
			throws NIOException
	{
		if(!dead)
		{
			throw new NIOException("You must stop the server before you can re-start it.");
		}

        this.portConfiguration = portConfiguration;
		try{
            acceptSelector = Selector.open();
			readSelector = Selector.open();
			connections = new LinkedBlockingQueue<SocketChannel>();
			acceptor = new NIOAcceptor<ATTACHMENT>(this);
			responder = new NIOResponder<ATTACHMENT>(this);

			responder.start();
			acceptor.start();
			dead = false;
		}catch(NIOException ne){
			throw ne;
		}catch(Exception e){
			throw new NIOException(e);
		}
	}

	public void stopServer()
	throws NIOException
	{
		if(dead)
		{
			throw new NIOException("You can not stop a server you have not started.");
		}

		try{
			acceptor.die();
			responder.die();
		}catch(Exception e){
			throw new NIOException(e);
		}

		dead = true;
	}
}
